作业帮24/25x减去3/5x等于3
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/16 17:45:39
x²-5x=14x²-5x-14=0(x-7)(x+2)=0x1=7x=-2x²-3x+2=7²-3x7+2=30或x²-3x+2=（-2）²
再问：再答：字模糊再问：
x-1/x=3x^2-3x-1=0(1)(1)*x得：x^3-3x^2-x=0(2)(1)*2得：2x^2-6x-2=0(3)(2)+(3)得：x^3-x^2-7x-2=0所以：x^3-x^2-7x+
12分之5乘于X减去X除于4等于三分之一5/12*x-x/4=1/31/6*x=1/3x=2三分之二减去8X等于3减去二分之一X2/3-8x=3-1/2x(1/2-8)x=3-2/3-15/2x=7/
由2x^2-3x-4=0得：x^2-2=3x/2所以x-2/x=(x^2-2)/x=(3x/2)/x=3/2
(x+1)/(x^2-x)-1/3x=(x+5)/(3x-3)3(x+1)/(x^2-x)-1/x=(x+5)/(x-1)3(x+1)-(x-1)=x(x+5)3x+3-x+1=x^2+5x2x+4=
-3-2X=5X-3X-8-4X=-5X=5/4
-3-5x+4x²+-3x+2x²=6x²-8x-3
-3-5x+4x²+-3x+2x²=6x²-8x-3肯定是对的.
解分式方程输入很辛苦.经检验X=7/2是原方程的解.
5x²-3x-5+(-5x)=5x²-3x-5-5x=5x²-8x-5
(5/12-1/4）*x=1/31/6*x=1/3x=22/3-8x=x/22/3=8.5xx=1/51
(x-1)(x-3)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-5)=(x-1)(x-2)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-4)(x-1)(x-3)(x-5)(x
7x=5x+3两边都减去x-2得7x-(x-3)=5x+3-(x-3)7x-x+3=5x+3-x+36x+3=4x+6很高兴为您解答,【the1990】团队为您答题.请点击下面的【选为满意回答】按钮.
3x^2-5x-2002=1=>3x^2-5x=20035x-3x^2=-200315x-9x^2+2008=3(5x-3x^2)+2008=3×（-2003）+2008=-4001
4x^2-3x-5+2x=4x^2-x-5
-(-3x)=(5x)^2-3x-525x^2-6x-5=0此多项式为：25x^2-6x-5
x/(x-3)-5x/(x^2-x-6)=(x^2+2x)/(x^2-x-6)-5x/(x^2-x-6)=x/(x+2)
x²-3x=1,利用配方法:x²-3x+9/4=1+9/4(x-3/2)²=13/4x-3/2=±√13/2x=(3±√13)/2也可以用求根公式法解:x²-3
5x+6-2+3x=28x=2-6+28x=-2x=-2.5